Wednesday

April 16, 2014

April 16, 2014

Total # Posts: 198

**algebra**

20 miles

**biology 101**

describe ecosystem of temperate rain forest population growth and regulation thru community interactions

**reserch**

Iwould assume color of skin and hair ,sun reacts to darkness-hair is dark suns attracted -if there was heat no sun id remove all hair

**math**

Decide whether the pair of lines is parallel, perpendicular or neither: 2x+3y=3 2x+3y=10

**Physics**

Thanks you so much! I just saw that there was a part two in which it says, "what does it sound like when you hear his sentence?" He said, "Hey! Finish your test!" I don't know how to answer this...?

**Physics**

Superman is a character from the DC Comics universe with superhuman abilities. One day in the city of Metropolis you look to the skies only to see Superman passing directly over your head as he races to save Lois Lane from some imminent threat. Not in too much of a rush, Super...

**English 9-Please recheck answer and provide some d**

Thank you for all your help-I realy appreciate it

**Spanish 7th grade**

Sorry I sent it with my sister's name-she was asking something earlier Sorry about the confusion

**Spanish 7th grade**

I have a question about how to answer this If something is dulce, one would probably want to drink lemonade or a sour drink with it. I know dulce is sweet in Spanish but I don't get the correlation-or is it if you eat something sweet, you want to offset it with something s...

**chemistry**

What's the particle diagram of Carbon monoxide? Thank you

**science**

Are there articles about guinea pig and hamster speed through a maze?

**Math**

on july 16, 1882, a massive thunderstorm over Dubuque, Iowa, produced huge hailstones. The diameter of some of the hailstones was 17 in. ICe weighs about 0.033 lb/in^3;. Whas is the approximate weightof a 17 in. hailstone?

**math **

how to solve logarithms symbolically? log17(17)^(x+3)= log7(1) thank you

**Math**

Jack is standing next to a monument in the city square. His shadow is 18 feet long. The shadow of the monument is 150 feet long. If Jack is 6 feet tall, how tall is the monument

**chemistry**

what is the standard enthalpy formation of liquid diethylamine (CH3CH2)2 NH? N2O5(g) + 8CH4(g) ==> 2(CH3CH2)2NH(l) +5H2O(l), delta H= -1103kJ

**chemistry**

a 47.7L sample of a gaseous hydrocarbon, measured at 1.00atm and 25degreesC is burned in excess oxygen, liberating 4.33X10^3 kJ of heat at a constant pressure. what is the identity of the hydrocarbon?

**chemistry**

a 3.35g sample of solid silver reacted in excess chlorine gass to give a 4.45g sample of pure solid AgCl. the heat given off was 3.95kJ at constant pressure. what is th enthalpy of formation of AgCl?

**chemistry**

the molar mass of an unknown gas was measured by an effusion experiment. it took 63s for te gas to effuse. where as nitrogen gas took 48sec. what is the molar mass of the gas? 32g/mol 37g/mol 24g/mol 16g/mol 48g/mol

**chemistry**

what is the oxidizing agent in the equation 8H(aq)+ 6Cl(aq)+ Sn(s)+ 4NO3(aq)yields SnCl6(aq)+ 4NO2(g)+ 4H2O

**Chemistry**

A precipitate will be formed when an aqueous carbonic acid soution is added to what other aqueous solution? A. ammonium chloride B. calcium hydroxide C. Sodium Chloride D. Potassium carbonate E. Nitrous acid

**Chemistry**

yes but is SeO3 Soluble? i do not know if it can break apart, it is not on the chart

**Chemistry**

what is the net ionic equation for NaOH + H2SeO3?

**Geometry cheak**

Decide whether the pair of lines is parallel, perpendicular or neither: 2x+3y=3 2x+3y=10

**physical geography**

Regarding to the adiabatic Process.. Why is there a DRY ADIABATIC RATE and a SATURATED ADIABATIC RATE?

**physical science08**

regarding the Adiabatic Process.... why is their a dry adiabatic rate and a saturated adiabatic rate?

**History**

important enough for us to have freedom of speech... as if we the citizens wouldnt of have approved the constitution we would probably be governed under one government; no different political parties, we would do as we are told so from thee great ruler; the president

**physical geography**

why doea a rising parcel of unsaturated air cool more rapidly than a rising parcel of saturated air??

**spanish**

1. partido 2. campo 3. recive... mete

**spanish**

yo ago mi tarea en clase

**Chemistry **

In a run involving 1.00 mL 2.50 * 10^-3 FE and 1.00 mL of 2.50 * 10^-3 SCN solutions made up to a total volume of 10.0 mL, the concentration of complex formed at equilibrium was found to be 4.44 * 10^-5. What are the equilibrium concentrations of Fe^3+ and SCN^-? I tried m1v1=...

**Science**

Explaining how ear defenders work using the big idea of energy transfer?

**physics**

10^5 V/m

**10th grade, spanish three**

deopends me habla un amigo(guy friend) me habla una amiga(female friend) me habla mi mama(mother) me habla mi papa(father) depends

**10th grade, spanish three**

you mean "quien te abla por telefono todo los dias?

**History**

i have the same assignment and pretty much the same answer :)+

**Physics**

anyone????

**Physics**

Useful Constants: 1 Torr = 133.32 Pa; R = 8.3145 J/mol·K You have a thin metal sphere of unknown volume that contains helium gas at low pressure. You put the entire metal sphere into a bath of liquid nitrogen, and a pressure gauge on the sphere indicates a pressure of 2...

**maths**

is the following a function and if so is it inective, surjective or bijective: f: R-->R where f(x)=|x|

**Ap Physics**

it basically two tubes connected with a line, one to 10 cc has a weight put on top of it the second one 50cc has a force probe put on top of it. the weight changes force in first and causes the force and pressure in second to change. it basically using Pascal's Principal.

**Ap Physics**

Read the activity 2-1:Force and Pressure in the lab manual (pages 167-168). As described in the manual, consider a 10 cc syringe is connected to a 50 cc syringe. Information of the syringes are as follows: (mass of 10 cc piston) = 16 g (mass of 50 cc piston) = 60.6 g (diameter...

**Physics**

should not F2=F1*A2/A so F2=646.8*(615.752/169.71) F2=2346.759

**Physics**

i tried 646.8/169.71=F2/615.752 and tried solving for F but i am getting 2346.759 and it just not right..

**Physics**

So since i know F/A=F/A I'm just confused on how it affects one another....

**Physics**

ok so. I solved first part with F/A i got .9239 kPa. second part i solved to i just added the forces. I got 3.811 kPa. The last two i am having difficulty with....

**Physics**

Read the activity 2-1:Force and Pressure in the lab manual (pages 167-168). As described in the manual, consider a 10 cc syringe is connected to a 50 cc syringe. Information of the syringes are as follows: (mass of 10 cc piston) = 16 g (mass of 50 cc piston) = 60.6 g (diameter...

**Help Physics 1 question**

i tried .0003493 and -.0003493 but both are wrong where am i messing up exactly?

**Help Physics 1 question**

Period=1.4 seconds gravitational acceleration=9.8 m/s^2 length of string=.4865m angle is 3 degrees acceleration from that angle is=.5129 m/s^2 change in bobs height from release to bottom of arc=.000667m bobs speed at bottom of arc=.1143 m/s so i done all the questions and cal...

**Math**

u=-3 45/-15

**Physics**

b i got a=gsin(3)=.5129

**Physics**

You want to make an old-fashioned pendulum clock, with a period of exactly 1.4 second(s). Use the Earth's gravitational acceleration g = 9.8 m/s2. a) Ignoring the size of the pendulum bob, from what length wire should you hang your pendulum bob? .4865 m b) If you release t...

**Physics**

The moment of inertia of an object depends on the shape of the object, location and orientation of the axis of rotation. For a solid disk, when the disk is rotating about an axis that is perpendicular to the disk and passing through the center of the disk, the moment of inerti...

**math**

For an arithmetic sequence, a_{19} = 78. If the common difference is -3, find a_1 = (i found it to be 132) the sum of the first 57 terms =?? -I know there is a formula but i cant think of what it is

**math**

i figured out what i was doing thank you so much!

**math**

oh yeah sorry i wrote that wrong i put -168-8n but it still said my answer was wrong

**math**

-Write the arithmetic sequence 21,13,5,-3... in the standard form: a_n= -a_n=a_1+(n-1)d--so a_n=21+(n-1)-8 *a_n=-168-8n why isnt this right?

**math**

Determine the seating capacity of an auditorium with 10 rows of seats if there are 10 seats in the first row, 16 seats in the second row, 22 seats in the third row, 28 seats in the forth row, and so on ???

**social studies**

thanks so much i found the answer

**social studies**

p.s. i forgot to put remains in the oraginal question.

**social studies**

i mean why cant we find the remain off the Spanish missions left.

**social studies**

why we can't find many of the Spanish missions from this period in Florida?

**math please please!**

Is this correct? Write an explicit and recursive formula: -5,-4,-3,-2,-1... explicit: -5N+1 recursive:An-1+1

**math**

-2x^2<30 1/abs value(11-9x)=6 Please show me how to do these two!!

**Science**

Which moon would look the brightest from jupiter and why?

**Social Studies (France and nuclear arms)**

follow up question: what are some reasons that france have the right to nuclear arms? i know that in general it's for security and power but i dont know the specifics...... security, it's not like they have any threats right? and power.. im not sure what to say about that

**japan**

shukudai しゅくだい 宿題

**Social Studies (France and nuclear arms)**

what are some reasons that france have the right to nuclear arms? i know that in general it's for security and power but i dont know the specifics......

**Social Studies (France and nuclear arms)**

can anyone educate me about why france should have the right to nuclear arms?? and be specific about what the arms and rights are? please please please! i need to argue about it. thank you!

**science**

What is the unit for magnetic circuit?

**maths**

9 hours

**social studies**

Does apartheid still exist in some ways in South Africa? Explain.

**social studies**

What needs to take place to bridge the economic gap between whites and blacks in South Africa?

**science-urgent**

i still don't get how they're different. What are 4 differences between them?

**science-urgent**

What are differences between Continental Drifts and Plate Tectonics? I need at last 4 for each. Please help its urgent!!!!! Thanks a bunch! Ellie

**Math**

Ok we are doing distributive property in math and I'm so confused on some of the problems. the problems are: 9+(x-4) 5-4x-5/-4 4(3x-2y)-3(4x-3y) 7(r+s)-(r-s) 3y-2(x-2y) Thank you so much for your help. Ellie

**4th grade Math**

That means you have to multiply the numbers. The product is what you call the answer.

**Chem**

what product could you see in a flask when you cobined copper and sodium. basically what is the name for copper and sodium when combined

**Math**

What represants 5yards

**ecology**

Thanks!

**ecology**

Describe the abiotic conditions in a chaparral ecosystem? where is this ecosystem located? thanks!

**science**

How does a chemical beome neutral?

**science acids**

hello

**science acids**

you were a big help thanks again

**science acids**

how come bile from your digestive system is acid [how does this occur ] ? thanks 4 the help

**French**

you are perfectly right

**Trig**

Find all x and y between 0 and 2pi so that the equation is ture -2 cosx -i sin y = 2 sinx +i i am also having trouble with this one Simplify the power of i i to the 39th power

**human life**

If you still don't know the answer just g.O.o.g.L.e it and you'll get it!Or ask in W (Y)ahoo! answers

**chemistry**

yh you are doing grt

**Science 8th grade**

it 's glucose

**Math-measurement**

What is the official name of our system of measurement in America? All I ever hear about is the metric system, but I don't know what ours is called. Thanks

**acids and alkalis**

i.e 1-6 acid 7 neutral and numbers after that are alkalis

**acids and alkalis**

it becomes an acid due to which colour it turns when adding universal indicator

**maths**

How to calculate the mean number of threatened fishes, where total number of fishes is 29300 and number of threatened fishes is 1173. Hmmmm. you have one data point, that is, 1173 fish are threatened. The mean of one number is that number. Is there something else here? Thats w...

**the big idea of energy**

if you know what the big idea of energy is please can you tell me?? i will tell you stuff about magnesium burning =] thanx xD

**More Physics**

The diagram below indicates three positions to which a woman travels. She starts at position A, travels 3.0 km to the west to point B, then 6.0 km to the north to point C. She then backtracks, and travels 2.0 km to the south to point D. a) What is the total displacement of the...

**Physics**

How do I do these? A passenger at an airport steps onto a moving sidewalk that is 100.0 m long and is moving at a speed of 1.5 m/s. The passenger then starts walking at a speed of 1.0 m/s in the same direction as the sidewalk is moving. What is the passenger's velocity rel...

**James T. Russell**

I dont think so

**Don't understand this Geometry question**

Isosceles triangle XYZ is placed on a coordinate plane to be used for a coordinate proof. What should the coordinates of its vertices be? a. (-a,0), (0,0), (a,0) b. (0,0), (0,-a), (-a,0) c. (0,0), (0,a), (a,0) d. (0,0), (0,-a), (a,0) ??? 5 REASONS WHY SOCIAL STUDIES IS IMPOTTA...